Ball valve



FIG. 1 is a perspective view of a ball valve showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the ball valve that form no part of the claim.

The dot dash dot broken lines depict the boundaries of the claim and form no part thereof. 

CLAIM The ornamental design for a ball valve, as shown and described. 